PL158751B1 - A lining for headings with hydrqaulic filling - Google Patents

Abstract

1. Powered support for long-wall excavations with hydraulic filling, in thick strata, consisting of a three-part roof-bar with box-type structure and of a two-part foot piece, these being integrally connected by means of hydraulic supports and lemniscate beams, characterized in that the front and middle roof-bars (1, 7) have side covers (5) deflected by means of servomotors (6), while the main floor bars (14) are connected by connecting elements (17) to the rear floor bar (16) which, on the side of the space being liquidated, has on an extended structure the socket of a hydraulic support (10) of the middle roof-bar (7) and a clamp for attaching the filling barrier.<IMAGE>

Description

REPUBLIC

POLAND

@ PATENT DESCRIPTION ® PL @ 158751 © B1

Patent Office of the Republic of Poland (2l) Application number: 275758 (Z2) Date of application: November 9, 1988 @ I ⁿ tCl ^5:

E21D 23/04 nnniiu n uu j

Powered support for longwall workings carried out with hydraulic backfill

The holder of the patent:

Application announced:

May 14, 1990 BUP 10/90

New Wirek Coal Mine, Ruda Śląska, PL

The grant of the patent was announced on: October 30, 1992, WUP 10/92

Inventors:

Krzysztof Krajewski, Bytom, PL Włodzimierz Etryk, Bytom, PL Antoni Kandzia, Katowice, PL Wiktor Woźniak, Tychy, PL Jan Strojny, Ruda Śląska, PL Zbigniew Jaglarz, Ruda Śląska, PL Norbert Kostorz, Ruda Śląska, PL Robert Roszczyk, Ruda Śląska , PL Wojciech Muszczak, Katowice, PL

PL 158751 Β1

l. Mechanized support for longwall excavations with hydraulic backfilling in thick seams, consisting of a box structure three-part canopy and a two-part floor canopy connected together by means of hydraulic supports and lemniscate beams, characterized in that the front and middle canopy (1, 7) have side covers (5) tilted by actuators (6) and the main floor runners (14) are connected with connectors (17) with the rear floor (16), which from the side of the liquidated space on the elongated structure has a hydraulic support seat (10) of the canopy center (7) and a holder for attaching the filling dam.

MECHANIZED HOUSING FOR WALL PIPE PITCHES WITH HYDRAULIC PAD

Claims (2)

Patent claims · * · 1. Mechanized support for longwall excavations led with a hydraulic backfilling in thick seams, consisting of a box-structure three-part canopy with a two-part slag set connected to each other into one whole by means of hydraulic supports and lemniak beams, characterized in that the front and middle canopy / 1 , 7 / they have side guards / 5 / tilted by means of actuators / 6 /, and the main floor runners / 14 / are connected with connectors / 17 / with the rear catwalk ^{/ 16} /, which has a hydraulic support seat on the side of the i-and-opened space / 10 / central sidewall / 7 / and a holder for attaching a filling dam. Z. The casing according to the above, characterized in that it has lemni-square beams / 8 / connected at the top with a joint connecting the front canopy / 1 / with the central canopy / 7 /, and at the bottom with connectors / 15 / with the main canopy / 14 /, at the top, these beams are provided with brackets for mounting the actuators / 9 / stiffening the structure of the casing assembly. Casing according to claim 1 or Z, characterized in that the rear canopy / 13 / has a decreasing thickness in the bonding of the lilaced space according to the loads to be transferred, the front part of the canopy having handles connected to the roll core boxes / 12 / connected with trims with the central canopy / 7 /. The subject of the invention is a mechanized support intended for the protection of longwall workings carried out with hydraulic backfilling in coal seams with a thickness of about 3 a. The selection of thick seams with an underground cutter system requires a certain protection of the salinity of the working space of the longwall working space and the space liquidated by means of a hydraulic backfill. Previously known powered support designs adapted to the conditions of a hydraulically propped wall have the disadvantage that they do not protect the backfill very well. Moreover, these linings are generally used for seams of medium thickness, while underground mines increasingly often have to select seams thick for one layer. Too poor protection of the supported area with the use of the known powered supports poses a great threat to the work safety of people employed in this area when carrying out backfilling and filling the liquidated space. It has turned out that this risk can be effectively eliminated by means of a suitably constructed motorized support, which is the subject of the present invention. The essence of this casing is the use of a three-piece canopy and a two-piece slipper, all of which are connected to one another by means of joints. Both the front canopy and the central canopy of this housing are equipped with side shields that are tilted by actuators. On the other hand, the main floor runners are connected to the rear floor runner by means of connectors, while the hydraulic support seat of the central canopy and a handle for attaching the filling dam are located on the elongated structure of the rear floor runner. In addition, the Leanis 158 7 51 t beams of this housing are connected at the top with the joint connecting the front and middle canopy, and at the bottom by means of connectors with the main choke. In the upper part, these beams are equipped with brackets for mounting the actuators stiffening the structure of the housing set. The rear roof of the casing has a thickness decreasing towards the liquidated space of the longwall working, and in the front part it is provided with grips for additional connection with the central roof canopy by means of actuators. Such a construction of the casing set allows for the effective protection of both the working space and the space for liquidated longwall workings with hydraulic backfilling within their height of about 3 m. Thanks to the use of three-part canopies and two-part strings, the casing according to the invention performs its task very well even in conditions of uneven, undulating floor. and the roof of the longwall excavation. The item on the slide is shown in the exemplary embodiment in the drawing, in which Fig. 1 shows the powered support assembly in a side view, Fig. 2 - the same support set in a front view, and Fig. 3 - a half-sectional view of the support set. in advance. As shown in the drawing, the powered support assembly according to the invention consists of a three-part canopy and a two-part floor runner, articulated by means of hydraulic supports, beams and lemimskat connectors. The front ridge 1 of this casing has a box structure supported by two hydraulic supports 2. In the front part, this canopy has a side guard 3 pivoting with a hydraulic cylinder 4, and on both sides it has side guards 5, which can also be tilted by means of actuators 6. Hat omaet the rear part of this canopy it is equipped with a joint by means of which it is connected to the central canopy 7 and to the lemniscate beams 8, which at the same time constitute a support for fastening the joists 9, which act as stiffening of the whole structure. The central riser 7 has a box structure supported by a hydraulic support 10 and equipped with side guards pivoted by actuators. At the bottom, this canopy has two brackets 11, at which two actuators 12 are articulated underneath the inks. The cylinders of these actuators are connected to the corresponding holders of the rear canopy 13, the thickness of which grinds gradually in the direction of the liquidated space, according to the transferred loads. The main runners 14 of the front canopy 1 are a supporting element for the hydraulic supports 2 of the front canopy 1 and for the lemniscate beams 8 connected to these flaps by means of connectors 15. In addition, the main runners 14 have an elongated front part allowing for free space for the passage of the crew with a width from 0.6 to 1 m π depending on the location of the hydraulic supports 2. At the same time, the rear floor 16 is a supporting element for the hydraulic support 10 of the central canopy 7 and is connected to the main floor 14 by means of connectors 17. Moreover, the rear floor 16, on the liquidated side the space has an elongated structure for attaching a backfilling dam. During operation, the pressure of the roof is transferred through the canopy 1.7,13, hydraulic supports 2.10 and the floor 14.16 to the floor of the excavation. The sidewall 3 protects the crew against coal patches detached from the sidewall, and the side covers 5 of the canopies 1,7 fill the gaps between the adjacent sections of the casing. On the other hand, the rear canopy 13 protects the ceiling in the space to be liquidated by means of a hydraulic backing.